Improvement in mashing



N. G. TH'OM.

Mashing Apparatus. No. 23,125. Patented March 11. 1859.

E x i I I r wifiasdeaf N Panza Pbolo-Lhhagraphor/Washinglon. at.

UNITED STATES PATENT OFFICE.

N. G. THOM, OF DAYTON, OHIO.

IMPROVEMENT IN MASSHINGV Specification forming part of Letters Patent No. 23,125, dated March 11859.

tillers by the term Mashing, and I do hereby declare that the following description is a full and exact description of the construction and operation of the machine, to wit:-

The nature of my invention consists in introducing, by means of pipes and hollow shafts, water, steam,. and air at different times, as may be required, in the mash-tub during the process of mashing, increasing the quantity of liquor produced, and decreasing the time usually occupied in the operation.

That others skilled in the art may readily understand my invention I proceed to describe the drawings, referring by figures and letters (which apply to the same parts in all the drawings) to the different parts of the machine, thereby explaining its construction and operation.

Figure I is a sectional elevation of a mashtub, cut by the line B C, Fig. II, showing my patent stirring and cooling apparatus. Fig. II is a plan ofthe same, the wind-pipe a, and the shaft m. The gears 70 and-l are represented by dotted lines. Fig. III is a side view of one of the surface-agitators broken from the arm (1, the red arrows showing the direction of the current from the pipe s. The red arrows in all cases show the direction of the currents of water, steam, or air as they are forced through the pipes.

The red dotted lines in Fig. I show the form which the surface of the mash assumes when the machine is in motion.

The parts colored yellow (marked A) represent the wood-work of the tub. The parts colored blue represent the ironwork in section, and those in black iron-work in full.

a, Figs. I and II, is a stationary pipe through which the water, steam, or air is admitted. b b is a hollow shaft having a circular step in the pipe at at c, forming a self-packing joint, in which it revolves. d d d are hollow arms attached to the shaft b, to which are fastened the perforated pipes e e, &c. f f f are spiral agitators attached by the pipes e to the arms cl, or otherwise, in such a manner that by their rotary motion they continually carry the mash from the bottom to the surface.

g g g are surface-agitators attached by the pipes s to the arm cl and (to prevent confusion) are shown by black dotted lines in Fig. I; a

top view, as attached to the arm cl, in Fig. II,

and a side view at Fig. III.

h is a pipe bolted to the bottom of the tub, through which the shaft b passes, having a bearing at 7i: isa gear keyed to the shaft 1) and driven by the pinion Z on shaft m, to which power is applied.

r is an oil-cup surrounding the step c.

The arms at (l d, pipes e e e, &c.., and agi tators f andgmay be increasedor diminished in size or number, according to the size of the tub in which they are to be worked, which may be in the manner following, viz:

A suflicient quantity of water being introduced into the tub by pipe a, shaft 1), arms (I, and pipes c, or otherwise, either in a cold or partially-heated state, the machine is then made to revolve by means of the shaft m, pinion Z, and gear is on the hollow shaft b.

Steam is then admitted through the same series of pipes and shafts a b d e, &c.,until the water attains a sufficiently high temperature for the purpose required. The malt or meal is then introduced into the tub, the machine still revolving, until the whole is thoroughly incorporated. Steam being shut off, air is next forced through the same series a b d e, &c., by a fan, bellows, or other device, and escapes into the heated mash through the perforations in the pipes c, pervading the whole mass, as shown by the red lines in Fig. II. At the same time the surfaceagitators g, attached to the arm d-by the pipe 8 and re volving with it, cause the surface to assume" the form shown by the dotted red lines o in Fig. I, exposing a large amount of surface to the blast from the mouth of the pipe 8, as shown by the red arrows, while the spiral agitators fare continually changing the mash from the bottom to the surface and constantly exposing new surface to the action of the blast, causing the temperature to be reduced with great rapidity to the point required, thus preventing acidification, and thereby increasing the quantity of liquor produced and decreasing the time usually required by other methods of cooling. WVhen cooled to the proper temperature, water may then be admitted, as before, until the mash is of a consistency to be drawn or pumped into the fermenting-vats.

I disclaim as a part of my invention the hollow arms (1 (Z d, and also the pipes e e e, &c., when used without the perforations, as I have since ascertained that they have been previously used for similar purposes; but

I claim 1. The perforations in the pipes e e 6, &c., attached to the hollow arms (Z (Z d, or any analogous device by which Water, steam, or air is admitted into the mash-tub in such manner as to distribute it equally,or nearly so, to all parts of the mash.

2. The spiral agitators when attached to any revolving machinery, for the purposes as set forth. I

3. The surface-agitators, of whatever form, when attached to revolving tubes, for the purpose set forth.

4c. The use of a self-packing joint applied to mash-tubs when used for the purpose set forth, in Whatever form it may be constructed.

5. The combination of the surface-agitators with a stationary or revolving blast.

N. G. THOM. l/Vitnesses:

H. A. SHAFER, DAVID DAVIS. 

